The only thing I can think of is to keep it in a cool dark dry place, not the freezer, it will get freezer burn. Make sure it is packaged well, if you have a vacum sealer, that would be best. Another thing is check out oriental trading co. they have tons of cool halloween candy, and it may be available year round, im not sure.

Theres also curved tiles you could put around the corners so you dont keep killing yourself on them. Glass mosaic would be really cool with images underneath. I know you can get sea glass in craft stores, or even different colored glass peices used for stained glass. I would imagine itd work the same as tile mosaics.

DONT USE SCULPY!!!! Its a chemical. Dont use acrylic either. Its a chemical. You dont want chemicals in your ears, your ears can grow into them (especially because they are pourous). Rocks, wood, crystal, most things organic are fine. Wood plugs are quite simple to make, but require a lot of sanding time. If you would like instructions, pm me.BUT EVERYONE, PLEASE BE CAREFUL ON WHAT YOU PUT IN YOUR EARS!!!!